| SIMATIC S7-300, Analog module SM 334, isolated, 4 AI/2 AO, 12 bit, 0-10 V f. Pt100 (climatic range -120-155 degrees) and 10 kOhm measuring range, 1x 20-pole |
Supply voltage |
Load voltage L+ |
● Rated value (DC) | 24 V |
● Reverse polarity protection | Yes |
Input current |
from supply and load voltage L+ (without load), max. | 80 mA |
from backplane bus 5 V DC, max. | 60 mA |
Power loss |
Power loss, typ. | 2 W |
Analog inputs |
Number of analog inputs | 4 |
● For voltage measurement | 2 |
● For resistance measurement | 4 |
permissible input voltage for voltage input (destruction limit), max. | 20 V; continuous; 75 V for max. 1 s (mark to space ratio 1:20) |
Cycle time (all channels) max. | 85 ms |
Input ranges |
● Voltage | Yes |
● Current | No |
● Thermocouple | No |
● Resistance thermometer | Yes |
● Resistance | Yes |
Input ranges (rated values), voltages |
● 0 to +10 V | Yes |
— Input resistance (0 to 10 V) | 100 kΩ |
Input ranges (rated values), resistance thermometer |
● Pt 100 | Yes; only climatic range |
Input ranges (rated values), resistors |
● 0 to 10000 ohms | Yes |
Characteristic linearization |
● parameterizable | Yes |
Cable length |
● shielded, max. | 100 m |
Analog outputs |
Number of analog outputs | 2 |
Voltage output, short-circuit protection | Yes |
Voltage output, short-circuit current, max. | 30 mA |
Output ranges, voltage |
● 0 to 10 V | Yes |
Load impedance (in rated range of output) |
● with voltage outputs, min. | 2.5 kΩ |
● with voltage outputs, capacitive load, max. | 1 µF |
Cable length |
● shielded, max. | 100 m |
Analog value generation for the inputs |
Integration and conversion time/resolution per channel |
● Resolution with overrange (bit including sign), max. | 12 bit |
● Integration time, parameterizable | Yes |
● Integration time (ms) | 16,67 / 20 ms |
● Interference voltage suppression for interference frequency f1 in Hz | 50 / 60 Hz |
Analog value generation for the outputs |
Integration and conversion time/resolution per channel |
● Resolution with overrange (bit including sign), max. | 12 bit |
● Conversion time (per channel) | 500 µs |
Settling time |
● for resistive load | 0.8 ms |
● for capacitive load | 0.8 ms |
Encoder |
Connection of signal encoders |
● for voltage measurement | Yes |
● for resistance measurement with two-wire connection | Yes |
● for resistance measurement with three-wire connection | Yes |
● for resistance measurement with four-wire connection | Yes |
Errors/accuracies |
Operational error limit in overall temperature range |
● Voltage, relative to input range, (+/-) | 0.7 %; 0 to 10V |
● Resistance, relative to input range, (+/-) | 3.5 %; 10 kOhm |
● Resistance thermometer, relative to input range, (+/-) | 1 % |
● Voltage, relative to output range, (+/-) | 1 % |
Basic error limit (operational limit at 25 °C) |
● Voltage, relative to input range, (+/-) | 0.5 %; 0 to 10V |
● Resistance, relative to input range, (+/-) | 2.8 %; 10 kOhm |
● Resistance thermometer, relative to input range, (+/-) | 0.8 % |
● Voltage, relative to output range, (+/-) | 0.85 % |
Interrupts/diagnostics/status information |
Alarms | No |
Diagnostics function | No |
Potential separation |
Potential separation analog inputs |
● between the channels and backplane bus | Yes |
Potential separation analog outputs |
● between the channels | No |
● between the channels and backplane bus | Yes |
● between the channels and the power supply of the electronics | Yes |
Isolation |
Isolation tested with | 500 V DC |
Connection method |
required front connector | 20-pin |
Dimensions |
Width | 40 mm |
Height | 125 mm |
Depth | 117 mm |
Weights |
Weight, approx. | 200 g |
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